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How to Call Denver, Colorado
CallingDenver.com provides detailed information for making international long distance telephone calls to Denver, Colorado, USA from any country in the world.
United States phone numbers are highly standardized, so Denver phone numbers follow the same format used throughout the US. Mobile numbers and landline numbers have identical 10-digit formats.
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Denver Dialing Codes
To make an international phone call to Denver, CO, the following dialing codes will be required.
United States phone numbers are highly standardized and are always 10-digits long. They are almost universally written to include all 10-digits. This makes dialing USA phone numbers a bit easier than in some countries.
Phone Number Format for International Calls
To make an international phone call to Denver, you generally will need to dial a phone number formatted as follows:
International Phone Number Format
Taking this general format, you need to plug in the outbound international access code for your originating country and the complete 10-digit phone number in Denver.
In the US, landline numbers and cell phone numbers have identical 10-digit formats.
In Denver and throughout the US, landline phones and mobile phones have identical phone number formats. Both types of phone numbers are 10-digits long, including a 3-digit area code and a 7-digit subscriber number.
The complete international phone numbers you should use to reach the two types of phones are shown below.
|Landline vs. Mobile||Phone Number Format|
|Denver landline phone numbers||ddd 1 aaa nnn nnnn|
|Denver mobile phone numbers||ddd 1 aaa nnn nnnn|
For dialing information on calling Denver from specific countries, please follow the country links below. On these pages, you will find country-specific dialing codes, phone number formats, and step-by-step dialing instructions for calling Denver, CO from your country.
If your country is not listed, please follow the Denver dialing procedure.
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To make an international call to Denver, CO, USA, you first need to dial the international access code (aka 'IDD') for your originating country. You can lookup the international access code for your country in the widget below.
Your IDD will print here
Insert your IDD at the maroon x's below to create a complete international phone number for dialing Denver.